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Cosmological perturbations in the 5D Big Bang
Jaume Garriga, Takahiro Tanaka
Bucher [Bucher2001] has recently proposed an interesting brane-world cosmological scenario where the ``Big Bang'' hypersurface is the locus of collision of two vacuum bubbles which…
Second order perturbations in the radius stabilized Randall-Sundrum two branes model
Hideaki Kudoh, Takahiro Tanaka
The nonlinear gravitational interaction is investigated in the Randall-Sundrum two branes model with the radius stabilization mechanism. As the stabilization model, we assume a sin…
Bulk scalar field in the braneworld can mimic the 4D inflaton dynamics
Yoshiaki Himemoto, Takahiro Tanaka, Misao Sasaki
Based on the recently proposed scenario of inflation driven by a bulk scalar field in the braneworld of the Randall-Sundrum (RS) type, we investigate the dynamics of a bulk scalar…
Moduli effective action in warped brane world compactifications
Jaume Garriga, Oriol Pujolas, Takahiro Tanaka
We consider a class of 5-D brane-world solutions with a power-law warp factor , and bulk dilaton with profile , where is the proper distance…
Brane Big-Bang Brought by Bulk Bubble
Uchida Gen, Akihiro Ishibashi, Takahiro Tanaka
We propose an alternative inflationary universe scenario in the context of Randall-Sundrum braneworld cosmology. In this new scenario the existence of extra-dimension(s) plays an e…
Stable Operation of a 300-m Laser Interferometer with Sufficient Sensitivity to Detect Gravitational-Wave Events within our Galaxy
Masaki Ando, the TAMA collaboration
TAMA300, an interferometric gravitational-wave detector with 300-m baseline length, has been developed and operated with sufficient sensitivity to detect gravitational-wave events…